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  • Al-diffusion coating  (1)
  • Sulfide NaCrS2  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Role of platinum in the Na2SO4-Induced hot corrosion resistance of aluminum duffusion coatings (1984)
    Springer
    Oxidation of metals 22 (1984), S. 59-81 
    Details
    ISSN: 1573-4889
    Keywords: Al-diffusion coating ; platinum ; hot corrosion ; acidic and basic fluxing ; sulfate melt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Electrochemical corrosion measurements have been carried out with Pt-containing and Pt-free Al-diffusion coatings on IN 738 LC in a 90Na2SO4+ 10K2SO4 (mol%) melt at 1173 K. Pt improves the resistance to basic fluxing while there are no significant differences between both coating types in their resistance to acidic fluxing. The corrosion resistance of the Pt-containing coating is also higher in the passive potential region where protective scales rich in Al2O3 are formed. The reason for the different behavior of both coating types appears to be related to the high corrosion resistance of the Pt-rich surface layer of the coating and an increased Al2O3 content in the scale of the Pt-containing type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00659249
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The identification of the sulfide NaCrS2 in nickel-base superalloys during corrosion in sulfate melts (1982)
    Springer
    Oxidation of metals 18 (1982), S. 187-194 
    Details
    ISSN: 1573-4889
    Keywords: Sulfide NaCrS2 ; basic fluxing ; nickel-base superalloy ; Na2SO4 melt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The sulfide NaCrS2 has been identified in the internal corrosion zone of several nickel-base superalloys under basic fluxing conditions at very negative potentials in a 90% Na2SO4-10% K2SO4 melt at 1173 K. It can also be formed in the presence of carbon-contaminated sulfate. NaCrS2 can dissolve some Ti, Al, Ni, and Co; other elements, e.g., K, Mo, W, Nb, Ta, and Zr, could not be detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662037
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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